Pool salt calculator
Salt bags to reach your saltwater target ppm.
Inputs
The formula
lbs = (gallons × ppm to raise) ÷ 120,000.
Worked example
20,000 gal × 3,200 ppm ÷ 120,000 ≈ 533 lb = 14 bags of 40 lb.
Frequently asked
›Ideal salt level?
Most chlorinators target 2,700–3,400 ppm; 3,200 is common.
›Can I use table salt?
No — use pool-grade non-iodized salt only.